JPWO2018158905A1 - Rotating parts - Google Patents

Rotating parts Download PDF

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JPWO2018158905A1
JPWO2018158905A1 JP2019502380A JP2019502380A JPWO2018158905A1 JP WO2018158905 A1 JPWO2018158905 A1 JP WO2018158905A1 JP 2019502380 A JP2019502380 A JP 2019502380A JP 2019502380 A JP2019502380 A JP 2019502380A JP WO2018158905 A1 JPWO2018158905 A1 JP WO2018158905A1
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operation shaft
bearing
rotation operation
annular
tapered surface
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JP6709322B2 (en
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勝 宮城
大輔 井上
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Tokyo Cosmos Electric Co Ltd
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Tokyo Cosmos Electric Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/20—Driving mechanisms allowing angular displacement of the operating part to be effective in either direction

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  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanical Control Devices (AREA)
  • Support Of The Bearing (AREA)
  • Adjustable Resistors (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

回転操作部品は、回転操作軸（１１）と、軸受（１３）と、リングバネ（１４）と、を備え、軸受（１３）は、回転操作軸（１１）を保持する環状領域における奥側の端部に環状の端部を有し、環状の端部の内側には、軸受（１３）の奥側に向かうほど軸受（１３）の内径が大きくなるよう第１のテーパー面が形成されており、回転操作軸（１１）の第１のテーパー面に対向する面には、軸受（１３）の奥側に向かうほど回転操作軸（１１）の外径が大きくなるよう第２のテーパー面が形成されており、第１のテーパー面のテーパー角は第２のテーパー面のテーパー角よりも大きく、リングバネ（１４）は、第１のテーパー面、および、第２のテーパー面に挟まれて、第１のテーパー面を押圧する状態で配置されている。The rotation operation component includes a rotation operation shaft (11), a bearing (13), and a ring spring (14), and the bearing (13) is an end on the back side in an annular region that holds the rotation operation shaft (11). The first tapered surface is formed so that the inner diameter of the bearing (13) becomes larger toward the inner side of the bearing (13), inside the annular end portion. A second tapered surface is formed on the surface of the rotational operation shaft (11) facing the first tapered surface so that the outer diameter of the rotational operation shaft (11) increases toward the back side of the bearing (13). The taper angle of the first taper surface is larger than the taper angle of the second taper surface, and the ring spring (14) is sandwiched between the first taper surface and the second taper surface, It arrange | positions in the state which presses a taper surface.

Description

本発明は、回転操作軸と、回転操作軸の一方の端部が挿入され、回転操作軸を回転自在に保持する軸受とからなる回転操作部品に関する。   The present invention relates to a rotary operation component including a rotary operation shaft and a bearing into which one end of the rotary operation shaft is inserted and rotatably holds the rotary operation shaft.

従来、回転操作軸を有する回転型スイッチやポテンショメータなどの部品が広く用いられている。回転操作軸は軸受により保持されるが、回転操作軸が軸受から抜けないようにすることが要求される。   Conventionally, components such as a rotary switch having a rotary operation shaft and a potentiometer have been widely used. Although the rotary operation shaft is held by a bearing, it is required that the rotary operation shaft is not detached from the bearing.

このような技術として、特許文献１、２には、回転操作軸の溝にはめ込まれた止め輪が軸受と接触することにより回転操作軸が軸受から抜けることを防止する電子部品の回転軸保持構造が開示されている。   As such a technique, Patent Documents 1 and 2 disclose a rotating shaft holding structure for an electronic component that prevents a rotating operation shaft from coming out of the bearing when a retaining ring fitted in a groove of the rotating operation shaft contacts the bearing. Is disclosed.

実開昭６３−３３６０６号公報Japanese Utility Model Publication No. 63-33606 国際公開第２０１３／０６５５０７号International Publication No. 2013/065507

しかしながら、近年、このような部品においては回転操作軸の抜け防止だけでなく、回転操作軸が軸受に対して滑らかに回転できるようにしつつ、回転操作軸のガタつきを抑制することが望まれている。   However, in recent years, in such parts, it is desired not only to prevent the rotation operation shaft from coming off, but also to prevent the rotation operation shaft from rattling while allowing the rotation operation shaft to rotate smoothly with respect to the bearing. Yes.

本発明の目的は、回転操作軸が軸受に対して滑らかに回転できるようにしつつ、回転操作軸のガタつきを抑制することが可能な回転操作部品を提供することを目的とする。   An object of the present invention is to provide a rotary operation component capable of suppressing the play of the rotary operation shaft while allowing the rotary operation shaft to rotate smoothly with respect to the bearing.

本発明の回転操作部品は、回転操作軸と、回転操作軸の一方の端部が挿入されており、回転操作軸を回転自在に保持する軸受と、リングバネと、を備え、軸受は、回転操作軸を保持する環状領域における軸受の奥側の端部に環状の第１の端部を有し、環状領域における奥側の端部と反対側の端部に環状の第２の端部を有し、第１の端部の内側には、軸受の奥側に向かうほど軸受の内径が大きくなるよう第１のテーパー面が形成されており、回転操作軸の第１のテーパー面に対向する面には、軸受の奥側に向かうほど回転操作軸の外径が大きくなるよう第２のテーパー面が形成されており、第１のテーパー面のテーパー角は第２のテーパー面のテーパー角よりも大きく、リングバネは、第１のテーパー面、および、第２のテーパー面に挟まれて、第１のテーパー面を押圧する状態で配置されていることを特徴とする。   The rotational operation component of the present invention includes a rotational operation shaft, a bearing in which one end of the rotational operation shaft is inserted, and rotatably supporting the rotational operation shaft, and a ring spring. In the annular region holding the shaft, an annular first end is provided at the end on the back side of the bearing, and an annular second end is provided on the end opposite to the inner end in the annular region. A first tapered surface is formed on the inner side of the first end so that the inner diameter of the bearing increases toward the inner side of the bearing, and the surface faces the first tapered surface of the rotation operation shaft. The second taper surface is formed so that the outer diameter of the rotation operation shaft increases toward the inner side of the bearing, and the taper angle of the first taper surface is larger than the taper angle of the second taper surface. Largely, the ring spring is sandwiched between the first tapered surface and the second tapered surface. Characterized in that it is arranged in a state of pressing the first tapered surface.

本発明によれば、回転操作軸が軸受に対して滑らかに回転できるようにしつつ、回転操作軸のガタつきを抑制することができる。   According to the present invention, it is possible to suppress the play of the rotation operation shaft while allowing the rotation operation shaft to rotate smoothly with respect to the bearing.

本実施の形態に係るポテンショメータの分解斜視図Exploded perspective view of potentiometer according to the present embodiment 本実施の形態に係るポテンショメータの断面図Sectional view of potentiometer according to the present embodiment 回転操作軸および軸受に挟まれて配置されるリングバネの状態を示す図The figure which shows the state of the ring spring arrange | positioned between a rotation operation axis | shaft and a bearing

以下、本発明の実施の形態について、図面を参照して詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

以下では、回転操作部品の一例として、ポテンショメータを例に挙げて説明する。しかし、本発明はこれに限定されるものではなく、回転操作軸と、回転操作軸の一方の端部が挿入され、回転操作軸を回転自在に保持する軸受とからなる部品に広く適用できる。   Hereinafter, a potentiometer will be described as an example of the rotary operation component. However, the present invention is not limited to this, and can be widely applied to components including a rotation operation shaft and a bearing in which one end of the rotation operation shaft is inserted and the rotation operation shaft is rotatably held.

図１は、本実施の形態に係るポテンショメータ１０の分解斜視図である。図１に示すように、このポテンショメータ１０は、回転操作軸１１、マグネット１２、軸受１３、リングバネ１４、回路基板１５、ホルダ１６を備える。   FIG. 1 is an exploded perspective view of a potentiometer 10 according to the present embodiment. As shown in FIG. 1, the potentiometer 10 includes a rotation operation shaft 11, a magnet 12, a bearing 13, a ring spring 14, a circuit board 15, and a holder 16.

回転操作軸１１は、ユーザにより回転操作がなされる軸である。マグネット１２は、回転操作軸１１に固定され、回転操作軸１１とともに回転するマグネットである。このマグネット１２の回転による磁界の変化を、後述する回路基板１５に搭載されたホールＩＣ１５ａが検出する。   The rotation operation shaft 11 is an axis that is rotated by the user. The magnet 12 is a magnet that is fixed to the rotation operation shaft 11 and rotates together with the rotation operation shaft 11. The change of the magnetic field due to the rotation of the magnet 12 is detected by the Hall IC 15a mounted on the circuit board 15 described later.

軸受１３は、回転操作軸１１の一方の端部が挿入され、回転操作軸１１を回転自在に保持する軸受である。軸受１３は、ホルダ１６と組み合わされて回路基板１５を収納する筐体となる。   The bearing 13 is a bearing into which one end of the rotational operation shaft 11 is inserted and holds the rotational operation shaft 11 rotatably. The bearing 13 is combined with the holder 16 to form a housing that houses the circuit board 15.

リングバネ１４は、一部が切断された環状のバネである。リングバネ１４は、弾性を有し、切断された部分の間隔が広がるような変形を受けると、元の形状に戻ろうとして狭まる。そのため、リングバネ１４の内周側に物体があると、その物体が押圧される。なお、リングバネ１４の断面は、円形でも楕円形でもよい。   The ring spring 14 is an annular spring partly cut. The ring spring 14 has elasticity, and when it is deformed so that the interval between the cut portions is widened, the ring spring 14 is narrowed to return to the original shape. Therefore, when there is an object on the inner peripheral side of the ring spring 14, the object is pressed. The cross section of the ring spring 14 may be circular or elliptical.

回路基板１５は、ホールＩＣ（Integrated Circuit）１５ａなどの電子回路が搭載された回路基板である。回路基板１５は、マグネット１２が回転した際、ホールＩＣ１５ａが検出した磁界の変化を電圧に変換して出力する。   The circuit board 15 is a circuit board on which an electronic circuit such as a Hall IC (Integrated Circuit) 15a is mounted. When the magnet 12 rotates, the circuit board 15 converts the change in the magnetic field detected by the Hall IC 15a into a voltage and outputs the voltage.

ホルダ１６は、前述のように、軸受１３と組み合わされて回路基板１５を収納する筐体となる。   As described above, the holder 16 is combined with the bearing 13 to serve as a housing that houses the circuit board 15.

図２は、本実施の形態に係るポテンショメータ１０の断面図である。また、図３は、回転操作軸１１、および、軸受１３に挟まれて配置されるリングバネ１４の状態を示す図である。図２、図３は、回転操作軸１１の回転軸を含み、回転軸に平行な断面で切断した場合の断面図である。   FIG. 2 is a cross-sectional view of the potentiometer 10 according to the present embodiment. FIG. 3 is a view showing a state of the rotary operation shaft 11 and the ring spring 14 disposed between the bearings 13. 2 and 3 are cross-sectional views when the rotary operation shaft 11 includes a rotation axis and is cut along a cross section parallel to the rotation axis.

図２、図３に示されるように、軸受１３は、回転操作軸１１を保持する環状領域１３ａにおける軸受１３の奥側の端部に環状の第１の端部１３ｂを有し、環状領域１３ａにおける奥側の端部と反対側の端部に環状の第２の端部１３ｃを有する。   As shown in FIGS. 2 and 3, the bearing 13 has an annular first end portion 13 b at the end on the back side of the bearing 13 in the annular region 13 a that holds the rotation operation shaft 11, and the annular region 13 a. An annular second end portion 13c is provided at an end portion on the opposite side to the end portion on the back side.

そして、第１の端部１３ｂの内側には、軸受１３の奥側（矢印Ａの方向）に向かうほど軸受１３の内径が大きくなるよう第１のテーパー面１３ｄが形成されている。   A first tapered surface 13d is formed on the inner side of the first end portion 13b so that the inner diameter of the bearing 13 increases toward the inner side of the bearing 13 (in the direction of arrow A).

また、回転操作軸１１の第１のテーパー面１３ｄに対向する面には、軸受１３の奥側に向かうほど回転操作軸１１の外径が大きくなるよう第２のテーパー面１１ａが形成されている。   Further, a second tapered surface 11 a is formed on the surface of the rotation operation shaft 11 that faces the first taper surface 13 d so that the outer diameter of the rotation operation shaft 11 increases toward the back side of the bearing 13. .

ここで、第１のテーパー面１３ｄのテーパー角αは、第２のテーパー面１１ａのテーパー角βよりも大きい。   Here, the taper angle α of the first tapered surface 13d is larger than the taper angle β of the second tapered surface 11a.

なお、本実施の形態では、図２、図３に示されるように、第１のテーパー面１３ｄ、および、第２のテーパー面１１ａは、断面でみた場合に直線状となっているが、それらが曲線状となるように第１のテーパー面１３ｄ、および、第２のテーパー面１１ａを形成してもよい。   In this embodiment, as shown in FIGS. 2 and 3, the first tapered surface 13d and the second tapered surface 11a are linear when viewed in cross section. The first tapered surface 13d and the second tapered surface 11a may be formed so as to be curved.

また、リングバネ１４は、第１のテーパー面１３ｄ、および、第２のテーパー面１１ａに挟まれて、第１のテーパー面１３ｄを押圧する状態で配置されている。   Further, the ring spring 14 is disposed between the first tapered surface 13d and the second tapered surface 11a so as to press the first tapered surface 13d.

具体的には、一部が切断された環状のリングバネ１４は、切断された部分の間隔が広がるように変形されて、第１のテーパー面１３ｄ、および、第２のテーパー面１１ａの間に配置される。そして、リングバネ１４は、元の形状に戻ろうとして狭まることにより、第１のテーパー面１３ｄを押圧する。   Specifically, the annular ring spring 14 that is partially cut is deformed so that the interval between the cut portions is widened, and is disposed between the first tapered surface 13d and the second tapered surface 11a. Is done. And the ring spring 14 presses the 1st taper surface 13d by narrowing to return to the original shape.

これにより、リングバネ１４は、第１のテーパー面１３ｄに沿って軸受１３の奥側とは反対側の方向（矢印Ａと反対の方向）に移動しようとするので、より確実に第１のテーパー面１３ｄと第２のテーパー面１１ａとに挟まれる。その結果、軸受１４に対する回転操作軸１１のガタつきを効果的に抑制することができる。   As a result, the ring spring 14 tends to move along the first tapered surface 13d in the direction opposite to the back side of the bearing 13 (the direction opposite to the arrow A). 13d and the second tapered surface 11a. As a result, rattling of the rotary operation shaft 11 with respect to the bearing 14 can be effectively suppressed.

また、このような構成では、軸受１４に対する回転操作軸１１の回転が妨げられず、回転操作軸１１が軸受１４に対して滑らかに回転できる。   Further, in such a configuration, the rotation operation shaft 11 is not prevented from rotating with respect to the bearing 14, and the rotation operation shaft 11 can rotate smoothly with respect to the bearing 14.

さらに、回転操作軸１１は、軸受１３に挿入される第１の円柱状部分１１ｂと、第１の円柱状部分１１ｂよりも外径が大きい第２の円柱状部分１１ｃとを備える。   Further, the rotation operation shaft 11 includes a first columnar portion 11b inserted into the bearing 13 and a second columnar portion 11c having an outer diameter larger than that of the first columnar portion 11b.

そして、第２の端部１３ｃは、第１の円柱状部分１１ｂと第２の円柱状部分１１ｃとの境界にある環状の段差部分１１ｄを面で支持する。これにより、回転操作軸１１のガタつきをさらに効果的に抑制できる。   And the 2nd end part 13c supports the cyclic | annular level | step-difference part 11d in the boundary of the 1st cylindrical part 11b and the 2nd cylindrical part 11c on a surface. Thereby, the play of the rotating operation shaft 11 can be more effectively suppressed.

図２の例では、上述した段差部分１１ｄは、第２の円柱状部分１１ｃの側面１１ｅ、および、第２の円柱状部分１１ｃの底面外周側の環状面１１ｆからなる。   In the example of FIG. 2, the step portion 11d described above includes a side surface 11e of the second cylindrical portion 11c and an annular surface 11f on the outer peripheral side of the bottom surface of the second cylindrical portion 11c.

そして、第２の端部１３ｃは、第２の円柱状部分１１ｃの側面１１ｅを回転操作軸１１の半径方向から環状面１３ｅにより面で支持し、第２の円柱状部分１１ｃの底面外周側の環状面１１ｆを回転操作軸１１の軸方向から軸受１３の環状面１３ｆにより面で支持する。   The second end portion 13c supports the side surface 11e of the second cylindrical portion 11c by the annular surface 13e from the radial direction of the rotation operation shaft 11, and is provided on the outer peripheral side of the bottom surface of the second cylindrical portion 11c. The annular surface 11 f is supported by the annular surface 13 f of the bearing 13 from the axial direction of the rotary operation shaft 11.

これにより、回転操作軸１１の軸方向のガタつき、および、軸方向と直交する方向のガタつきを効果的に抑制できる。   Thereby, the play of the axial direction of the rotating operation shaft 11 and the play of the direction orthogonal to an axial direction can be suppressed effectively.

なお、図２の例では、回転操作軸１１が、第１の円柱状部分１１ｂと第２の円柱状部分１１ｃとを備えることとしたが、第２の円柱状部分１１ｃをフランジとして、第１の円柱状部分１１ｂと外径が同じか、あるいは、その外径よりも小さい第３の円柱状部分を、第１の円柱状部分１１ｂと第３の円柱状部分とで第２の円柱状部分１１ｃを挟むようにして設けることとしてもよい。   In the example of FIG. 2, the rotation operation shaft 11 includes the first columnar portion 11 b and the second columnar portion 11 c, but the first columnar portion 11 c is used as a flange, and the first columnar portion 11 c is a flange. The third cylindrical portion having the same or smaller outer diameter than the cylindrical portion 11b of the first cylindrical portion 11b and the third cylindrical portion is the second cylindrical portion. It is good also as providing so that 11c may be pinched | interposed.

なお、第２の円柱状部分１１ｃは、円柱状でなくともよく、角柱状など柱状であればよい。この場合、第２の端部１３ｃは、柱状部分の底面外周側の環状面１１ｆを回転操作軸１１の軸方向から、環状面１３ｆにより面で支持する。   The second columnar portion 11c does not have to be a columnar shape, and may be a columnar shape such as a prismatic shape. In this case, the second end portion 13 c supports the annular surface 11 f on the outer peripheral side of the bottom surface of the columnar portion by the annular surface 13 f from the axial direction of the rotation operation shaft 11.

また、図２の例では、第２の端部１３ｃにおいて、２つの環状面１３ｅ、１３ｆにより段差が形成されていることとしたが、段差はなくともよく、回転操作軸１１の回転軸に垂直な環状面が形成されることとしてもよい。   In the example of FIG. 2, a step is formed by the two annular surfaces 13 e and 13 f in the second end portion 13 c. However, there is no step, and the step is perpendicular to the rotation axis of the rotary operation shaft 11. An annular surface may be formed.

この場合、第２の端部１３ｃは、第２の円柱状部分１１ｃの底面外周側の環状面１１ｆを回転操作軸１１の軸方向から、上述した環状面により面で支持する。   In this case, the second end portion 13c supports the annular surface 11f on the outer peripheral side of the bottom surface of the second columnar portion 11c with the above-described annular surface from the axial direction of the rotation operation shaft 11.

さらに、回転操作軸１１は、図３に示すように、軸受１３の奥側（矢印Ａの方向）の第２のテーパー面１１ａの端部にリングバネ１４の移動を止める壁面１１ｇを有する。   Further, as shown in FIG. 3, the rotary operation shaft 11 has a wall surface 11 g that stops the movement of the ring spring 14 at the end of the second tapered surface 11 a on the back side (in the direction of arrow A) of the bearing 13.

これにより、軸受１３から引き抜く方向に回転操作軸１１に力がかかった場合でも、リングバネ１４が第１のテーパー面１３ｄ、第２のテーパー面１１ａ、および、壁面１１ｇに接触し、軸受１３に対して回転操作軸１１が移動しなくなる。そのため、回転操作軸１１が軸受１３から抜けることを防止することができる。   As a result, even when a force is applied to the rotary operation shaft 11 in the direction of pulling out from the bearing 13, the ring spring 14 contacts the first tapered surface 13d, the second tapered surface 11a, and the wall surface 11g, and the bearing 13 Thus, the rotation operation shaft 11 does not move. Therefore, it is possible to prevent the rotary operation shaft 11 from coming off the bearing 13.

なお、壁面１１ｇの代わりに、回転操作軸１１の軸方向における回転操作軸１１の移動を妨げる構造を第１の端部１３ｂ以外の部分に設け、回転操作軸１１が軸受１３から抜けることを防止することとしてもよい。   Instead of the wall surface 11g, a structure that prevents the rotation operation shaft 11 from moving in the axial direction of the rotation operation shaft 11 is provided in a portion other than the first end portion 13b to prevent the rotation operation shaft 11 from coming off the bearing 13. It is good to do.

たとえば、回転操作軸１１の周囲に溝を形成し、軸受１３に突起を形成し、その溝に突起が係合することにより、回転操作軸１１の回転を妨げずに、回転操作軸１１の軸方向における回転操作軸１１の移動を防止するようにしてもよい。   For example, a groove is formed around the rotation operation shaft 11, a protrusion is formed on the bearing 13, and the protrusion engages with the groove, so that the rotation of the rotation operation shaft 11 is not hindered. The movement of the rotary operation shaft 11 in the direction may be prevented.

また、第２のテーパー面１１ａのもう一方の端部には、回転操作軸１１の回転軸から一定距離だけ離れた円筒状の内壁面１１ｈが形成されている。さらに、第２のテーパー面１１ａとつながる内壁面１１ｈの端部と反対側の端部には、環状の壁面１１ｉが形成されている。   In addition, a cylindrical inner wall surface 11h that is separated from the rotation axis of the rotation operation shaft 11 by a certain distance is formed at the other end of the second tapered surface 11a. Furthermore, an annular wall surface 11i is formed at the end opposite to the end of the inner wall 11h connected to the second tapered surface 11a.

ここでは、第２のテーパー面１１ａと壁面１１ｉとの間に円筒状の内壁面１１ｈを形成することとしたが、内壁面１１ｈの代わりにテーパー面を設けることとしてもよい。このテーパー面は、第２のテーパー面１１ａの延長であってもよい。   Here, the cylindrical inner wall surface 11h is formed between the second tapered surface 11a and the wall surface 11i, but a tapered surface may be provided instead of the inner wall surface 11h. This tapered surface may be an extension of the second tapered surface 11a.

このような場合であっても、図２、図３に示した構成と同様に、軸受１４に対する回転操作軸１１のガタつきを効果的に抑制することができるという効果が得られる。   Even in such a case, similarly to the configuration shown in FIGS. 2 and 3, the effect that the play of the rotary operation shaft 11 with respect to the bearing 14 can be effectively suppressed can be obtained.

本発明は、回転型スイッチやポテンショメータなどの回転操作軸を有する回転操作部品に用いるのに好適である。   The present invention is suitable for use in a rotary operation component having a rotary operation shaft such as a rotary switch or a potentiometer.

１０ ポテンショメータ
１１ 回転操作軸
１１ａ 第２のテーパー面
１１ｂ 第１の円柱状部分
１１ｃ 第２の円柱状部分
１１ｄ 段差部分
１１ｅ 第２の円柱状部分の側面
１１ｆ 第２の円柱状部分の底面外周側の環状面
１１ｇ 壁面
１１ｈ 内壁面
１１ｉ 壁面
１２ マグネット
１３ 軸受
１３ａ 回転操作軸を保持する領域
１３ｂ 第１の端部
１３ｃ 第２の端部
１３ｄ 第１のテーパー面
１３ｅ 環状面
１３ｆ 環状面
１４ リングバネ
１５ 回路基板
１５ａ ホールＩＣ
１６ ホルダDESCRIPTION OF SYMBOLS 10 Potentiometer 11 Rotation operation shaft 11a 2nd taper surface 11b 1st cylindrical part 11c 2nd cylindrical part 11d Step part 11e Side surface of 2nd cylindrical part 11f The bottom outer peripheral side of 2nd cylindrical part Annular surface 11g Wall surface 11h Inner wall surface 11i Wall surface 12 Magnet 13 Bearing 13a Region for holding the rotation operation shaft 13b First end portion 13c Second end portion 13d First tapered surface 13e Annular surface 13f Annular surface 14 Ring spring 15 Circuit board 15a Hall IC
16 Holder

Claims (5)

回転操作軸と、
前記回転操作軸の一方の端部が挿入されており、前記一方の端部を回転自在に保持する軸受と、
リングバネと、
を備え、
前記軸受は、前記回転操作軸を保持する環状領域における前記軸受の奥側の端部に環状の第１の端部を有し、前記環状領域における前記奥側の端部と反対側の端部に環状の第２の端部を有し、
前記第１の端部の内側には、前記軸受の奥側に向かうほど前記軸受の内径が大きくなるよう第１のテーパー面が形成されており、
前記回転操作軸の前記第１のテーパー面に対向する面には、前記軸受の奥側に向かうほど前記回転操作軸の外径が大きくなるよう第２のテーパー面が形成されており、
前記第１のテーパー面のテーパー角は前記第２のテーパー面のテーパー角よりも大きく、
前記リングバネは、前記第１のテーパー面、および、前記第２のテーパー面に挟まれて、前記第１のテーパー面を押圧する状態で配置されていることを特徴とする回転操作部品。A rotation operation axis;
One end of the rotation operation shaft is inserted, and a bearing that rotatably holds the one end;
A ring spring,
With
The bearing has an annular first end at an end on the back side of the bearing in an annular region that holds the rotation operation shaft, and an end on the opposite side to the end on the back side in the annular region. Having an annular second end,
A first tapered surface is formed on the inner side of the first end so that the inner diameter of the bearing increases toward the inner side of the bearing.
A second taper surface is formed on a surface of the rotation operation shaft that faces the first taper surface so that the outer diameter of the rotation operation shaft increases toward the back side of the bearing.
The taper angle of the first taper surface is larger than the taper angle of the second taper surface,
The ring spring is disposed in a state where the ring spring is sandwiched between the first tapered surface and the second tapered surface and presses the first tapered surface. 前記回転操作軸は、前記軸受に挿入される第１の円柱状部分と、前記第１の円柱状部分よりも外径が大きい第２の柱状部分とを備え、前記第２の端部は、前記第１の円柱状部分と前記第２の柱状部分との境界にある環状の段差部分を面で支持することを特徴とする請求項１に記載の回転操作部品。   The rotation operation shaft includes a first columnar portion inserted into the bearing, and a second columnar portion having an outer diameter larger than that of the first columnar portion, and the second end portion is The rotary operation component according to claim 1, wherein an annular stepped portion at a boundary between the first columnar portion and the second columnar portion is supported by a surface. 前記第２の柱状部分は円柱状であり、前記段差部分は、前記第２の柱状部分の側面、および、前記第２の柱状部分の底面外周側の環状面からなり、前記第２の端部は、前記環状面を前記回転操作軸の軸方向から面で支持することを特徴とする請求項２に記載の回転操作部品。   The second columnar portion has a cylindrical shape, and the stepped portion includes a side surface of the second columnar portion and an annular surface on the outer peripheral side of the bottom surface of the second columnar portion, and the second end portion. The rotary operation component according to claim 2, wherein the annular surface is supported by a surface from an axial direction of the rotation operation shaft. 前記第２の端部は、前記側面を前記回転操作軸の半径方向から面で支持することを特徴とする請求項３に記載の回転操作部品。   The rotary operation component according to claim 3, wherein the second end portion supports the side surface by a surface from a radial direction of the rotation operation shaft. 前記回転操作軸は、前記第２のテーパー面の端部に前記リングバネの移動を止める壁面を有することを特徴とする請求項１に記載の回転操作部品。   The rotational operation component according to claim 1, wherein the rotational operation shaft has a wall surface that stops movement of the ring spring at an end of the second tapered surface.
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